collect.js

whenNotEmpty()

The whenNotEmpty method will execute the given callback when the collection is not empty:

const collection = collect(["Sadio Mané"]);

collection.whenNotEmpty(c => c.push("Mohamed Salah"));

collection.all();

//=> [
//=>   'Sadio Mané',
//=>   'Mohamed Salah',
//=> ]

const collection = collect(["Sadio Mané"]);

collection.whenNotEmpty(
  c => c.push("Mohamed Salah"),
  c => c.push("Xherdan Shaqiri")
);

collection.all();

//=> [
//=>   'Sadio Mané',
//=>   'Mohamed Salah',
//=> ];

View source on GitHub

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